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2024-12-18 02:39:56 -05:00
commit 653ef00ca6
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+/**
+ * @file
+ * Defines logger for the microservice
+ */
+
+var winston = require('winston');
+var Papertrail = require('winston-papertrail').Papertrail;
+var serviceIdentifier = require('../package.json').name;
+
+var host = process.env.LOG_SERVICE_HOST;
+var port = process.env.LOG_SERVICE_PORT;
+
+/**
+ * Class to provide logging facilities for the microservice
+ * @constructor
+ */
+
+var Logger = function () {
+
+  // Try to route logs to third party service
+  if (host && port) {
+    // Define our transport
+    var transport = new Papertrail({
+      levels: {
+        debug: 0,
+        info: 1,
+        error: 3
+      },
+      colors: {
+        debug: 'blue',
+        info: 'green',
+        error: 'red'
+      },
+      host,
+      port,
+      json: true,
+      colorize: true,
+      logFormat: (level, message) => {
+        return `[${serviceIdentifier}] ${level} : ${message}`;
+      }
+    });
+
+    // Handle exceptions
+    transport.exceptionsLevel = 'error';
+    winston.handleExceptions(transport);
+  }
+
+  this.info = winston.info;
+  this.error = winston.error;
+  this.debug = winston.debug;
+};
+
+module.exports = new Logger();
+
+
+/**
+ * @typedef {Object} Logger
+ * @property {function} info - Log in level `info`
+ * @property {function} error - Log in level `error`
+ * @property {function} debug - Log in level `debug`
+ */